Planned Parenthood of Illinois says it has seen a 50 percent increase in requests for birth control services since Tuesday’s election.

Katie Thiede, vice president of development for Planned Parenthood of Illinois, said people may be making appointments now because they are concerned about the future of the Affordable Care Act. Both President-elect Donald Trump and Republican leaders in Congress have called for the repeal and replacement of President Barack Obama’s landmark policy.

“I think the ACA had a particular importance for women’s healthcare and particularly around birth control coverage,” Thiede said.

Trump has also pledged to appoint conservative justices to the U.S. Supreme Court. There is currently one seat that remains open after the sudden death of Justice Antonin Scalia in February. Anti-abortion activists hope that a more conservative court could limit abortion access.

Planned Parenthood is adding appointment slots in Illinois to keep up with the recent spike in demand.

Thiede says appointments to get intrauterine devices, or IUDs, have increased since Tuesday. Demand for permanent sterilization services is also up, she said.